A Correction: Design of Sewers to Facilitate Flow

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  • A Correction: Design of Sewers to Facilitate FlowSource: Sewage Works Journal, Vol. 18, No. 3 (May, 1946), p. 498Published by: Water Environment FederationStable URL: http://www.jstor.org/stable/25030256 .Accessed: 15/06/2014 18:58

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  • 498 SEWAGE WORKS JOURNAL May, 1946

    ators in recent years have removed the

    skimmings from the primary tanks to a scum well, and then removed the grease and scum manually to a remote point where it was buried or burned.

    To eliminate the transportation and extra labor and to dispose of the ma

    terial without nuisance, a small incin erator was built along side the scum

    well (Figure 3). A gas line from the

    sludge waste gas line provided auxili

    ary fuel. The material to be burned is now removed from the scum well, placed on the incinerator grate, the

    sludge gas line is lit and then the ma terial proceeds to burn. After it has

    ignited sufficiently it is no longer neces

    sary to use the gas if one must econo mize on its use. Approximately 60 cu.

    ft. of scum and grease are burned per

    week, or about 3,000 cu. ft. per year.

    Whereas in days past several feet of

    grease and scum would collect in the

    digesters, during the past sixteen months there has not been over 4 in. at any time.

    An unusual condition occasionally occurs when about 300 cu. ft. of grease and scum will collect in a period of a

    day or two when wastes are discharged from a local industrial plant. At such times a man is assigned to handle the

    material, and it is all burned without detriment to operation of the plant.

    In dry weather it is possible to burn some of the screenings, but in wet

    weather there is not enough heat avail able in the furnace.


    Thomas R. Camp, author of the article "Design of Sewers to Facilitate Flow," published in the January, 1946, issue of This Journal (Vol. 18, No. 1, page 3), directs attention to an error in one of the equations presented therein.

    A square root sign was omitted in the equation appearing at the bottom of the

    right-hand column on page 6. This equation should read:

    n / R y/?

    Wfull \ ?full /

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    Article Contentsp. 498

    Issue Table of ContentsSewage Works Journal, Vol. 18, No. 3 (May, 1946), pp. 1-22, 417-594, 23-44Front MatterSewage WorksSolids Removal as Influenced by Plant Design [pp. 419-432]Sewage Oxidation Ponds: Performance, Operation and Design [pp. 433-458]Plain Aeration of Sewage [pp. 459-471]Plain Aeration of Sewage: A Discussion [pp. 471-476]Effect of Food Wastes on Sewers and Sewage Treatment [pp. 477-483]Grit Collection and Conditioning [pp. 484-492]Progressive Development of District 2 Sewage Works, Tonawanda, N.Y. [pp. 493-498]A Correction: Design of Sewers to Facilitate Flow [p. 498-498]

    Industrial WastesTreatment of Cyanide and Acid Plating Wastes [pp. 499-502]A Report of Procedure for the Handling of Industrial Wastes: Prepared by the 1945 Committee on Industrial Wastes of the California Sewage Works Association [pp. 503-526]

    The Operator's CornerCivic Leadership and Public Relations [p. 527-527]Acid Iron Wastes and Diffuser Clogging at Elyria, Ohio [pp. 528-529]Digester Gas Explosion at Monroe, Mich. [pp. 529-532]Air Diffusion Problems at Cleveland's Southerly Plant [pp. 533-534]Monsieur le Vidangeur [pp. 534-536]Maintenance Problems in a Large Sewage Treatment Plant [pp. 536-538]Bark from the Daily Log [pp. 539-543]Digestion Tank Scum [pp. 543-548]Interesting Extracts from Operation ReportsOperations Report for the Fiscal Year 1944-1945 on the Sewage Treatment Plant of the City of Marshalltown, Iowa [pp. 548-552]Annual Report for the Years 1942-1943-1944 on the Operation of the Ann Arbor, Michigan, Sewage Treatment Plant [pp. 552-554]Annual Report for the Year 1944-45 of the Tri-City Sewage Treatment Plant, Pasadena, California [pp. 554-555]Thirteenth Annual Report of the Division of Sewage Disposal of the City of Toledo, Ohio, for the Year 1944 [pp. 555-556]

    Tips and Quips [pp. 556-561]

    EditorialPublic Construction in Perspective [pp. 562-564]

    Proceedings of Member Associations [pp. 565-571]Federation AffairsArthur S. Bedell (1887-1946): In Memoriam [pp. 572-573]Canada Beckons in October! [pp. 573-574]Surplus Property Purchase Procedure [p. 574-574]

    Reviews and Abstracts [pp. 575-589]A Correction: Reviews and Abstracts [p. 590-590]References to Sewage Literature [pp. 591-593]Back Matter


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